CN101729224A - Transmission data generating device and receiving machine - Google Patents
Transmission data generating device and receiving machine Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
- H04L1/1845—Combining techniques, e.g. code combining
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0079—Formats for control data
- H04L1/008—Formats for control data where the control data relates to payload of a different packet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1809—Selective-repeat protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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Abstract
The invention provides a transmission data generating device which is used in a transmitter of a communication system and comprises a redundancy data obtaining unit, a new data obtaining unit and a combination unit, wherein the redundancy data obtaining unit is used for obtaining redundancy data of information data, which are sent to the receiver but not received by the receiver rightly; the new data obtaining unit is used for obtaining new data which are not sent to the receiver; and the combination unit is used for combining the redundancy data and the new data to form transmission data sent to the receiver. The invention improves the decoding success ratio of the new data in first transmission data and retransmission data, and increases the throughout of the system.
Description
Technical field
The present invention relates to the transmission technology in the communication system, more particularly, relate to the method and apparatus and receiver data processing method and the device that retransmit based on the transmitter data in the automatic repeat requests of the mixing of steadily increase redundancy (HARQ) technology.
Background technology
Because wireless communication transmissions environment, noise and interference are to the influence of signal transmission, the reception of receiving end signal, processing procedure often once just can not finished, and promptly have the probability of certain decoding error.Need transmitting terminal to resend data this moment.Mixing automatic retransmission technique (being called for short the HARQ technology) is a kind of error detection techniques that generally is used for the non-real-time data transmission, it combines automatic repeat requests (being called for short ARQ) and two technology of forward error correction coding (being called for short FEC), receiving terminal is decoded to the data that receive, send answer signal according to cyclic redundancy check (CRC) (being called for short CRC) result to transmitting terminal then, if CRC check is correct, send affirmative acknowledgement signal ACK, if CRC check mistake, then send negative acknowledgement NAK, and the data that receive are preserved the data that resend with transmitting terminal merge, signal after being combined is decoded, up to decoding success or reach maximum retransmission.
According to the content difference that retransmits, the HARQ technology mainly contains 3 types,
HARQ-I: receiving terminal is directly abandoned the grouping of decoding error, and feedback NAK, and transmitting terminal retransmits and the identical grouping of first biography data combination decoding after receiving this signal.
HARQ-II: belong to steadily increase redundancy (being called for short IR) technology, erroneous packet does not abandon, and receiving terminal is preserved the data of decoding error, decodes after merging with the redundant information that retransmits.The data retransmission content is different with first biography data, only carries redundant information, does not possess the self-demarking code ability.
HARQ-III: erroneous packet does not abandon, and receiving terminal is preserved the data of decoding error, decodes after merging with data retransmission, and data retransmission possesses the self-demarking code ability, and the re-transmission format and content passes data with head can be identical or different.
Fig. 1 schematically shows the HARQ Frame and retransmits sequential.In schematic example shown in Figure 1, each Frame comprises a plurality of packets (among the figure illustration 4 packets).Receiving terminal (receiver section) is given transmitter section (transmitting terminal) for CRC check result of each packet feedback.In the example depicted in fig. 1, in initial four packet P1, P2, P3 and P4 that send, for example know that by CRC check P1 and P4 are correctly received, thereby at their ACK that is fed back to.And P2 and P3 are not correctly received, at their NAK that is fed back to.Thereby, as shown in Figure 1, in next frame, having retransmitted packet P2 and P3, other position in the frame can be used to send new packet (being new packet P5 and P6 shown in the figure).T shown in the figure is a Frame length, and Td is an interFrameGap.
In general HARQ system, when receiving terminal detected the misdata bag, the common fault bit only accounted for the part of packet, and whole packet re-transmission can be caused certain loss of throughput.The Long Term Evolution plan (LTE) of 3GPP and WiMAX system enhancement mode (802.16m) all with HARQ-II, III type as alternative.When for the first time attempting the decoding failure, the transmitter additional redundancy information or handle again after transmission again, retransmission packet and original transmitted bag are also incomplete same, these retransmission information and the previous packet that receives merge can obtain better throughput of system.
In general HARQ retransmission mechanism, packet to be done as a wholely to carry out CRC check at receiving terminal, and may be that some bit of minority of packet is made mistakes in the real system, the re-transmission of whole like this (or part) bag has taken many channel resources.In order further to improve the performance of HARQ, a kind of method that retransmits based on encoding block has been proposed.In the method, a packet is made of the encoding block that several carry check code, data retransmission is least unit with the encoding block.
Fig. 2 shows the schematic diagram of the packet structure of the technical scheme that retransmits according to encoding block.The packet structure of Fig. 2 only is exemplary, and it can comprise more or less encoding block.As shown in Figure 2, (perhaps be transmission package, Transport Block TB) comprises several (being shown schematically as 3 among the figure) encoding blocks to the packet in the frame, and each encoding block all is with a CRC check sign indicating number.Behind the source data bag process encoder, the combination of a corresponding encoding block and CRC check sign indicating number.Whole packet can add a CRC check sign indicating number at last, also can not add.Receiving terminal carries out verification to each encoding block, if make mistakes, only the encoding block of makeing mistakes is retransmitted in next bag data, and other encoding blocks can be put new data, the problem that can avoid general HARQ whole packet need be retransmitted like this.
In the technical scheme that the foundation encoding block retransmits, replacing whole packet with encoding block is that least unit retransmits, and has improved the throughput of system.But in Modern Communication System, in order to improve coding gain, generally select bigger encoding block length, for example in 3GPP LTE long evolving system, the encoding block maximum can reach 6144 bits, this means that the load of re-transmission is still very big.
Explanation to routine techniques above should be noted that is just for convenience carried out clear, complete explanation to technical scheme of the present invention, and makes things convenient for those skilled in the art's understanding to set forth.Can not only partly carry out setting forth and thinking that technique scheme is conventionally known to one of skill in the art in background technology of the present invention because of these schemes.
Below listed list of references of the present invention, by reference they have been incorporated into this, as having done detailed description in this manual.
1, [patent documentation 1]: Wu, et al., (US 7,152,196B2) for Adaptive multi-mode HARQ system andmethod;
2, [patent documentation 2]: Stewart, et al., Block puncturing for turbo coed basedincremental redundancy (US 20070061690A 1);
5, [patent documentation 3]: J.Wu, " Grouped Packet Encoding based H-ARQ UsingIterative Decoding ", Fujitsu Patent, April 16,2008, Patent#08-51201.
6, [patent documentation 4]: No. the 200810127487.4th, Chinese patent application, Xue Jinyin etc., automatic retransmission controller and reconfiguration device of retransmission block;
7, [non-patent literature 1]: 3GPP TR25.835.Report on hybrid ARQ type II/III[S] .2000;
8, [non-patent literature 2]: C.Bai, B.Mielczarek, W.A.Krzymie ' n, and I.J.Fair, " Sub-block recovery scheme for iterative decoding of turbo codes, " inProc.IEEE VTC ' 05-Fall, Dallas, USA, Sept.2005;
9, [non-patent literature 3]: Tao Shi; Lei Cao, " Combining techniques andsegment selective repeat on turbo coded hybrid ARQ ", in Proc.IEEE Conf.WCNC.2004IEEE, Vol.4, pp.2115-2119,21-25March 2004.
Summary of the invention
The present invention makes in view of the current state of prior art, in order to overcome one or more shortcoming that prior art exists, provides a kind of useful selection at least.
In order to realize above purpose, the application provides following invention.
Invention 1, a kind of transmission data generating device, described transmission data generating device uses in the transmitter of communication system, and described transmission data generating device comprises:
Redundant data acquiring unit, described redundant data acquiring unit are used to obtain the redundant data that sends to receiver but be not received the correct information data that receives of machine,
The new data acquiring unit, described new data acquiring unit is used to obtain the new data that does not send to described receiver as yet;
Assembled unit, described assembled unit makes up described redundant data and described new data, and formation will send to the transmission data of described receiver.。
The advantage that the transmission data that this transmission data generating device adopted generate scheme is, than traditional steadily increase redundancy mode, this scheme has reduced the size that retransmits the verification section, improved the throughput of system, retransmit the verification section simultaneously with the new data transmission of encoding, improved the reliability that retransmits the verification section.
The invention 2, according to the invention 1 described transmission data generating device, it is characterized in that described transmission data generating device also comprises the portfolio ratio setup unit, be used to set the proportionate relationship of described redundant data and described new data.
Invention 3, a kind of receiver, described receiver comprises:
The control information acquiring unit is used to obtain Combination Control information;
The redundant data acquiring unit is used for obtaining the redundant data that passes data corresponding to head according to described Combination Control information from data retransmission, promptly retransmits redundant data;
The data merge cells is used for described re-transmission redundant data and the first data that pass are merged, and obtains to merge the first data that pass in back; And
Decoding unit is used for the first data that pass in described merging back are decoded;
Wherein, described receiver also comprises the redundant data processing unit, described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described merging back first biography data, obtain and the corresponding correct towering remainder certificate of described re-transmission redundant data according to the correct first data that pass that decode, and described correct redundant data is handled;
Wherein, described data merge cells also is used for treated described correct redundant data and described data retransmission are merged, and obtains to merge the back data retransmission; Described decoding unit is also decoded to described merging back data retransmission.
The advantage of this mode is that the first data that pass can be utilized the data retransmission decoding, have improved first biography data decode and have got accuracy, and the correct head that decodes passes data can help the data retransmission decoding again, has improved the accuracy of transmitting the new data decoding in the data retransmission.
The invention 4, according to the invention 3 described receivers, it is characterized in that,
When first biography data were correctly decoded after described decoding unit is failed to described merging, described decoding unit was also decoded to described data retransmission;
Described verification section processing unit is used for after described decoding unit has carried out being correctly decoded to described data retransmission, obtains correct re-transmission redundant data according to the correct data retransmission that decodes, and this correct re-transmission redundant data is handled;
Described data merge cells merges treated described re-transmission redundant data mutually with the first data that pass, and obtains merging the first data that pass in back once more; And
Described decoding unit to the described merging that obtains once more after the first data that pass decode.
The advantage of this mode is that the head of decoding error passes the corresponding first redundant data information of being obtained after data can utilize data retransmission to decode successfully that passes data, has improved the accuracy of first biography data decode.
The invention 5, according to the invention 3 described receivers, it is characterized in that, described redundant data processing unit obtains described correct redundant data as follows: the information data that the head that decoding is obtained passes in the data is carried out mother's coding, obtain correct check information, in this check information, take out and corresponding one section of described re-transmission redundant data then.
Invention 6, according to invention 5 described receivers, it is characterized in that the every value of will be described correct redundant data that is treated to that described redundant data processing unit carries out described correct redundant data is expanded as corresponding maximum according to this value positive and negative.
The invention 7, according to the invention 5 described receivers, it is characterized in that the re-transmission redundant data in the described data retransmission can be incomplete same with the check information that head passes in the data.
Invention 8, a kind of receiver, described receiver comprises:
The control information acquiring unit is used to obtain the reorganization control information;
Redundant data acquiring unit, described redundant data acquiring unit are used for passing the check information of data according to what data retransmission was obtained in described reorganization control information corresponding to head, promptly retransmit redundant data;
Decoding unit is used for data retransmission is decoded;
Wherein, described receiver also comprises: the redundant data processing unit, described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described data retransmission, according to described reorganization control information, according to the correct data retransmission that decodes obtain with data retransmission in the corresponding correct redundant data of re-transmission redundant data, and this correct redundant data handled; And
The data merge cells is used for treated described correct redundant data and the described first data that pass are merged, and obtains to merge the first data that pass in back;
And wherein, described decoding unit also is used for the first data that pass in described merging back are decoded.
This invention is that with the difference of invention 3 this invention is for decoding to the data retransmission that receives earlier, and the first then data that pass can be utilized the corresponding first redundant data that passes data in the correct data retransmission of decoding, improve the first accuracy that passes data decode.
The invention 9, according to the invention 8 described receivers, it is characterized in that,
When described decoding unit failed described data retransmission is correctly decoded, described data merge cells merged described re-transmission redundant data mutually with the first data that pass, and obtained merging the first data that pass in back;
Described decoding unit is decoded to the first data that pass in described merging back;
Described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described merging back first biography data, according to described reorganization control information, pass data according to the head that decodes and obtain and the corresponding correct redundant data of described re-transmission redundant data, and to handling according to corresponding correct redundant data with the towering remainder of described re-transmission; And
The data merge cells is used for corresponding correct redundant data of treated and described re-transmission redundant data and data retransmission are merged, and obtains to merge the back data retransmission;
And wherein, described decoding unit also is used for described merging back data retransmission is decoded.
The advantage of this mode is, the first data that pass can be utilized the data retransmission decoding, improved first biography data decode and got accuracy, the correct head that decodes passes data can help the data retransmission decoding of decoding error again, has improved the accuracy of transmitting the new data decoding in the data retransmission.
Invention 10, according to invention 8 described receivers, it is characterized in that the re-transmission redundant data in the described data retransmission is incomplete same with the first check information that passes in the data.
Invention 11, a kind of data retransmission method of reseptance, described method of reseptance comprises:
The control information obtaining step is used to obtain the reorganization control information;
The redundant data obtaining step is used for passing the check information of data according to what data retransmission was obtained in described reorganization control information corresponding to head;
The first data combining step is used for data retransmission is merged corresponding to check information and the first data that pass that head passes data, obtains the first data that pass in merging back; And
First decoding step is used for the first data that pass in described merging back are decoded;
Wherein, described method also comprises:
The redundant data treatment step, the described first redundant data treatment step be used for described decoding step to described merging back first pass data and carried out being correctly decoded after, according to decode correct first pass data obtain with data retransmission in pass the corresponding correct redundant data of check information of data corresponding to head;
The second data combining step is used for described correct redundant data and described data retransmission are merged, and obtains to merge the back data retransmission;
Second decoding step is decoded to described merging back data retransmission.
Invention 12, a kind of data retransmission method of reseptance, described method comprises:
The control information obtaining step is used to obtain the reorganization control information;
Redundant data obtaining step, described redundant data obtaining step are used for passing the check information of data according to what data retransmission was obtained in described reorganization control information corresponding to head;
First decoding step is used for data retransmission is decoded;
Wherein, described method also comprises:
The redundant data treatment step, described redundant data treatment step is used for after described first decoding step has carried out being correctly decoded to described data retransmission, according to described reorganization control information, according to the corresponding correct redundant data of check information that passes data in correct data retransmission acquisition that decodes and the data retransmission corresponding to head;
The data combining step is used for described correct redundant data and the first data that pass are merged, and obtains to merge the first data that pass in back;
Second decoding step is used for the first data that pass in described merging back are decoded.
Invention 13, a kind of transmitter, it comprises claim 1 or 2 described data recombination unit.
The invention 14, according to the invention 13 described transmitters, it is characterized in that described transmitter also comprises:
The response receiving element is used for receiving from the receiver feedack; And
Retransmit judging unit,, need to determine the coded data block of re-transmission according to the information that described response receiving element receives,
Described data recombination unit is handled according to the partial data that retransmits the definite needs re-transmission of judging unit.
The invention 15, according to the invention 14 described transmitters, it is characterized in that described transmitter also comprises:
The form notification unit is used for Combination Control information is notified to described receiver.
Invention 17, a kind of computer software, this computer software can make this computer realization foregoing invention 11 or 12 described data retransmission method of reseptances when being carried out by computer or being carried out by computer interpretation or compiling back.
Invention 18, a kind of computer-readable recording medium, it stores foregoing invention 16 or 17 described computer softwares.
Invent 18 described computer-readable recording mediums and can be for example floppy disk, hard disk, CD, magneto optical disk, dense read-only memory (CD-ROM), fine and close writable memory (CD-R), digital universal disc read-only memory (DVD-ROM), DVD-RAM, tape, Nonvolatile memory card, ROM card and various recording medium, on them, can record the program code that transmits via network (for example Email or personal computer communication (being communication line)).
With reference to the following description and accompanying drawing, of the present invention these will become clearer with further aspect and feature.In described explanation and accompanying drawing, specific implementations of the present invention is disclosed in detail, having indicated principle of the present invention can adopted mode.Should be appreciated that, the present invention on scope not thereby be restricted.In the scope of the spirit of claims and clause, the present invention includes many changes, revise and be equal to.
Can in one or more other execution mode, use in identical or similar mode at the feature that a kind of execution mode is described and/or illustrated, combined with the feature in other execution mode, or the feature in alternative other execution mode.
Should emphasize that term " comprises/comprise " existence that refers to feature, whole, step or assembly when this paper uses, but not get rid of the existence of one or more further feature, whole, step or assembly or additional.
With reference to following accompanying drawing a lot of aspects that the present invention may be better understood.Parts in the accompanying drawing are not proportional draftings, and just for principle of the present invention is shown.For the ease of illustrating and describe some parts of the present invention, counterpart may be exaggerated in the accompanying drawing, that is, make it become bigger with respect to other parts in the exemplary means of the actual manufacturing of foundation the present invention.Element of describing in an accompanying drawing of the present invention or a kind of execution mode and feature can combine with element and the feature shown in one or more other accompanying drawing or the execution mode.In addition, in the accompanying drawings, similarly label is represented corresponding components in several accompanying drawings, and can be used for indicating the corresponding component that uses more than in a kind of execution mode.
Description of drawings
Accompanying drawing shows the preferred embodiments of the present invention, has constituted the part of specification, is used for explaining principle of the present invention, feature and advantage in further detail with explanatory note.Wherein:
Fig. 1 shows the Frame of general HARQ system and the sequential schematic diagram of re-transmission;
Fig. 2 shows the schematic diagram of the packet structure of the technical scheme that retransmits according to encoding block;
Fig. 3 shows the block diagram according to transmitter terminal data re-transmission controller of the present invention;
Fig. 4 shows the block diagram according to receiver end Data Receiving controller of the present invention;
Fig. 5 shows a kind of data recombination scheme according to transmitter terminal of the present invention;
Fig. 6 shows the another kind of data recombination scheme according to transmitter terminal of the present invention;
Fig. 7 shows a kind of data Merge Scenarios according to receiver end of the present invention;
Fig. 8 shows the another kind of data Merge Scenarios according to receiver end of the present invention;
Fig. 9 shows the data transmission flow according to transmitter terminal of the present invention;
Figure 10 shows a kind of Data Receiving flow process according to receiver end of the present invention; And
Figure 11 shows the another kind of Data Receiving flow process according to receiver end of the present invention.
Embodiment
Be example with general single antenna communication system below, come method and apparatus of the present invention is described with reference to accompanying drawing.But it should be noted that the present invention not only can be applicable to the single antenna communication system, equally also can be applied in the multiaerial system or cdma system of MIMO-OFDM.Retransmit for general Internet network data, the present invention also is suitable for.
Fig. 3 has schematically provided the structure chart of transmitter terminal data re-transmission controller.As shown in Figure 3, data re-transmission controller 101 comprises response receiving element 102, retransmits judging unit 103, transmission data generating unit 104 and form notification unit 105.Wherein, transmission data generating unit 104 comprises redundant data acquiring unit 1041, new data acquiring unit 1042, assembled unit 1043.In addition, alternatively, transmission data generating unit 104 can also comprise portfolio ratio setup unit 1044.
Fig. 4 has schematically provided the structure chart of receiving terminal data processing controller.As shown in Figure 4, data processing controller 201 comprises control information acquiring unit 202, verification section selected cell 203, data merge cells 204, verification section processing unit 205 and decoding unit 206.
Fig. 5 schematically shows a kind of data recombination scheme of carrying out at transmitting terminal according to of the present invention.As shown in Figure 5, at transmitting terminal, data after each son bag among the PDU (protocol Data Unit) is encoded through mother are made up of information data and checking data, and wherein checking data schematically is divided into a plurality of verification sections, is respectively verification section I, verification section II and verification section III.The checking data here for example is the check digit of Turbo coding, is also referred to as redundant data in this article.The data of actual transmissions, are only got the part checking data and are transmitted promptly according to code rate by obtaining through the data punching behind female coding.That schematically, adopt among Fig. 5 is verification section I.Be called the first data that pass in this article again as illustrative information data among Fig. 5 and verification section I.If for the first time the coded data of transmission is in receiving terminal decoding failure, transmitter data retransmission then, the data of re-transmission are made of verification section II and new information data.This verification section II can be identical with the verification section (for example verification section I) that head passes, but preferably, with the verification section different (incomplete same) of head biography.More preferably, the verification section with the head biography is different fully.Should note, in the present invention, although new information data that transmitter is launched and verification section II etc. may never be sent out before, based on context in, in order to distinguish mutually, will these data be called data retransmission with the correct data that receive or decode of the machine that is not received of previous transmission.Equally, based on context, in order to distinguish mutually with the verification section that head passes in the data, the verification section in the data retransmission (for example verification section II) no matter whether once be sent to receiver before still be called re-transmission verification section, or retransmit redundant data.
Fig. 6 schematically shows the another kind of data recombination scheme of carrying out at transmitting terminal according to of the present invention.As shown in Figure 6, at transmitting terminal, data after two son bags are encoded through mother among the PDU are made up of information data and checking data respectively, and wherein checking data schematically is divided into a plurality of verification sections, and the check information of its neutron packet 1 female editorial afterword is divided into verification section I, verification section II and verification section III; Check information behind son bag 2 female codings is divided into verification section I ', verification section II ' and verification section III '.The data of each son bag actual transmissions, are only got the part check bit and are transmitted promptly according to code rate by obtaining through the data punching behind female coding.Schematically, first verification section that all adopts behind two sub-packet encoders, promptly verification section I is adopted in son bag 1 coding back, and I ' are adopted in son bag 2 coding backs.If the coded data of two son bag transmission for the first time is in receiving terminal decoding failure, then transmitting terminal carries out data re-transmission, and the data of re-transmission are made of verification section II (the first data re-transmission verification section that passes), verification section II ' (the first data re-transmission verification section that passes) and fresh information coding back.
Fig. 7 schematically shows a kind of data Merge Scenarios that carries out at receiving terminal according to of the present invention.This Merge Scenarios is corresponding to the data transmission scheme among Fig. 5.As shown in Figure 7, at receiving terminal, the head of decoding failure passes in the stored buffer memory of the soft information of data.Receive after the data retransmission, the corresponding first verification section II that passes data in the data retransmission can be taken out, and pass the data merging, decode to help the first data that pass with head.Further, also can pass data according to the head after being correctly decoded, obtain the value of its verification section II, the verification section II that handles back and data retransmission carries out soft information and merges, and decodes to help data retransmission.
Fig. 8 schematically shows the another kind of data Merge Scenarios that carries out at receiving terminal according to of the present invention.This Merge Scenarios is corresponding to the data transmission scheme among Fig. 6.As shown in Figure 8, at receiving terminal, receive after the data retransmission, the verification section II and the verification section II ' of corresponding first biography bag 1 and first biography bag 2 in the data retransmission can be taken out respectively, and pass data and the son bag 2 first data that pass merge with the child bag that receives 1 is first respectively, to help firstly to pass son bag 1 and the first son bag 2 that passes is decoded; Also can pass data according to the head after being correctly decoded, obtain the value of its verification section II and verification section II ' respectively, the verification section II and the verification section II ' that handle back and data retransmission respectively carry out soft information merging, decode to help data retransmission.
Fig. 9 schematically shows the data transmission flow according to one embodiment of the present invention.As shown in Figure 9, at first, in step 1, the decoding response message that the response receiving element 102 in the transmitter data reorganization control unit 101 receives by the receiver feedback.Then in step 2, retransmit the decoding response message that judging unit 103 receives according to response receiving element 102, judge whether the first data that pass decode correctly, if decoding correct (step 2 is), then execution in step 8, carry out new data and send preparation, for example the new biography data are formed encoding block, calculate CRC, and form son bag etc.Execution in step 6 then, this son bag is encoded, and the data after will encoding deposit buffer memory in.
If decoding error (step 2, not), then execution in step 3, in step 3, portfolio ratio setup unit 1044 in the transmission data generating unit 104 is set and retransmit the ratio that the verification section occupies in being retransmitted the son bag, calculates the first size that passes the verification section of data in the actual re-transmission bag.Enter step 4 then.The size that should be noted that the first in other words biography data re-transmission of the ratio verification section that first biography data re-transmission verification section occupies in retransmitting the son bag can be predetermined, in this case, can omit step 3.
In step 4, the redundant data acquiring unit 1041 of transmission data generating unit 104 reads the transmitter buffer memory, and the head that the size that obtains according to step 3 or predetermined size read identical size passes the verification section (for example verification section II) of data as the first re-transmission verification section that passes data.Subsequently, program enters step 5.
In step 5, new data acquiring unit 1042 obtains new data, and the assembled unit 1043 of transmission in the data generating unit 104 is combined into an encoding block with the new data set that the verification section that obtained by redundant data acquiring unit 1041 in the step 4 and new data acquiring unit 1042 obtain, and calculating cyclic redundancy check information CRC, encoding block is formed a son bag therewith.Then, in step 6, this son bag is encoded, and the data after will encoding deposit buffer memory in.At last, in step 7, the data behind the coding are handled the back send.In some cases, in step 7, also send corresponding format information by form notification unit 105.This format information for example can illustrate the size that retransmits in the verification Duan Zaizi bag, position etc.Alternatively, this format information for example can illustrate the ratio that retransmits verification section and new data, the field composition of son bag, each field size, position etc.Arranged under the situation of format information at transmitting terminal and receiving terminal, can omit this form notification unit 105.
The data retransmission that Figure 10 has schematically provided according to one embodiment of the present invention receives flow chart.The data retransmission of Figure 10 receives the receiver data Merge Scenarios that flow chart provides at Fig. 7.This flow process is at first according to the corresponding first information that passes data in the data retransmission, and the head that takes defeat with help passes data decoding earlier, and then passes the decoding of data help data retransmission according to the head that success is decoded.This flow process may further comprise the steps:
Control information acquiring unit 202 in step 102, the receiver is judged headed by whether the data that receive and is passed data, if not (step 102 not), then turn to step 103, otherwise (step 102 is) turns to step 116;
Control information acquiring unit 202 in step 103, the receiver judges whether to reach maximum retransmission, if then end data is handled, otherwise turns to step 104;
Step 105, data merge cells 204 are got the decoding failure from buffer memory head passes data, carry out the merging with the verification section, in the data retransmission that is about to receive the soft information of corresponding verification section II be attached to the head that has deposited pass in the data verification section I (also claiming the first data check section that passes) afterwards;
Data after step 106, decoding unit 206 are combined are decoded;
After step 108, the first biography data decode success, 205 pairs of verification section processing units retransmit verification section (for example verification section II) and handle, described processing comprises that mainly the information data that decoding is obtained carries out again female coding, get the verification section II in the correspondence re-transmission encoding block after mother encodes then, be just or negative (positive and negative relation) according to this value bit by bit, it is become a maximum, as+1 become+100 ,-1 become-100 etc.The reason of doing this processing is a receiver when decoding, the soft information for each bit of the data that receive of input decoder, and the absolute value of this soft information is big more, represents that the reliability of this bit is high more.After doing this processing, can improve the value of this each bit soft information of verification section, thereby improve the accuracy of decoding.
Step 109 and 110, in step 109, verification section II after will being handled by data merge cells 204 merges to its pairing position of data retransmission, promptly the verification section II with the data retransmission that receives carries out soft information addition, retransmits data decode in step 110 by 206 pairs of decoding units then.Though what should be noted that use here is this statement of data retransmission, as previously described, data retransmission described here comprises new data, and the purpose of the decoding of this step will be correctly decoded out described new data exactly;
Step 111, decoding unit 206 judge whether to decode successfully, decode successfully if judge, and then turn to step 101, receiver to begin to receive new data, do not decode successfully if judge, and then turn to step 117, send re-transmitted signal, and receive processing;
Step 112,206 pairs of data retransmissions of decoding unit are decoded;
Step 116,206 pairs of first data that pass of decoding unit are decoded, and enter step 111 then, judge whether that decoding is correct, as it are correct to decode, and then turns to step 1, begins to receive new data.Otherwise turn to step 117.
Step 117, decoding failure send re-transmitted signal, and processing this time finishes.
Figure 11 has schematically provided according to another kind of Data Receiving flow process of the present invention.This flow process is at first decoded to data retransmission, and then according to the data retransmission after being correctly decoded, the head that help takes defeat passes data and decodes.
This flow process may further comprise the steps:
Control information acquiring unit 202 in step 1102, the receiver judges headed by whether the data that receive and passes data, if not, then turn to step 1103, otherwise turn to step 1108;
Control information acquiring unit 202 in step 1103, the receiver judges whether to reach maximum retransmission, if then end data is handled, otherwise turns to step 1104;
Data after step 1108,206 pairs of first biography data of decoding unit or the merging are decoded;
Step 1111, this verification section II and the first data that pass are merged mutually by data merge cells 204;
Step 1114, obtain correct verification section II according to the information data that the head that is correctly decoded out passes in the data, and handle, promptly as mentioned above, become corresponding maximum by turn according to positive and negative by verification section processing unit 205;
Step 1115, data merge cells 204 are got data retransmission, and the treated head that obtains in the step 1114 is passed data check section II merge verification section II after being about to handle and the soft information addition of the verification section II in the data retransmission with the data retransmission that receives.And enter step 1108 and decode.
For receiver data Merge Scenarios shown in Figure 8, also can be easily carry out according to the design of Figure 10 and flow process shown in Figure 11.
Technical scheme of the present invention all can be used in TDD and FDD system, and in the TDD system, signaling can be sent the different of a downgoing time section with data constantly.In the FDD system, signaling is sent simultaneously by special-purpose frequency range and data.
Device of the present invention and parts and method etc. can be realized by hardware, also can be realized by software, perhaps have the combination of hardware and software to realize.
Although complete and clearly described the present invention at specific execution mode, claims are not limited thereto, and the basic instruction that should be interpreted as following here and set forth, those skilled in the art attainable all alternative example and modified examples.
Claims (10)
1. transmission data generating device, described transmission data generating device uses in the transmitter of communication system, and described transmission data generating device comprises:
Redundant data acquiring unit, described redundant data acquiring unit are used to obtain the redundant data that sends to receiver but be not received the correct information data that receives of machine,
The new data acquiring unit, described new data acquiring unit is used to obtain the new data that does not send to described receiver as yet;
Assembled unit, described assembled unit makes up described redundant data and described new data, and formation will send to the transmission data of described receiver.
2. transmission data generating device according to claim 1 is characterized in that described transmission data generating device also comprises the portfolio ratio setup unit, is used to set the proportionate relationship of described redundant data and described new data.
3. receiver, described receiver comprises:
The control information acquiring unit is used to obtain Combination Control information;
The redundant data acquiring unit is used for obtaining the redundant data that passes data corresponding to head according to described Combination Control information from data retransmission, promptly retransmits redundant data;
The data merge cells is used for described re-transmission redundant data and the first data that pass are merged, and obtains to merge the first data that pass in back; And
Decoding unit is used for the first data that pass in described merging back are decoded;
Wherein, described receiver also comprises the redundant data processing unit, described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described merging back first biography data, obtain and the corresponding correct redundant data of described re-transmission redundant data according to the correct first data that pass that decode, and described correct redundant data is handled;
Wherein, described data merge cells also is used for treated described correct redundant data and described data retransmission are merged, and obtains to merge the back data retransmission; Described decoding unit is also decoded to described merging back data retransmission.
4. receiver according to claim 3 is characterized in that,
When first biography data were correctly decoded after described decoding unit is failed to described merging, described decoding unit was also decoded to described data retransmission;
Described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described data retransmission, obtains correct re-transmission redundant data according to the correct data retransmission that decodes, and this correct re-transmission redundant data is handled;
Described data merge cells merges treated described re-transmission redundant data mutually with the first data that pass, and obtains merging the first data that pass in back once more; And
Described decoding unit to the described merging that obtains once more after the first data that pass decode.
5. receiver according to claim 3, it is characterized in that, described redundant data processing unit obtains described correct redundant data as follows: the information data that the head that decoding is obtained passes in the data is carried out mother's coding, obtain correct check information, in this check information, take out and corresponding one section of described re-transmission redundant data then.
6. receiver according to claim 5 is characterized in that, described redundant data processing unit is expanded as corresponding maximum with described correct everybody value of redundant data according to this value positive and negative to being treated to of carrying out of described correct redundant data.
7. receiver according to claim 5 is characterized in that, the re-transmission redundant data in the described data retransmission is incomplete same with the first check information that passes in the data.
8. receiver, described receiver comprises:
The control information acquiring unit is used to obtain Combination Control information;
Redundant data acquiring unit, described redundant data acquiring unit are used for passing the redundant data of data according to what described Combination Control information was obtained data retransmission corresponding to head, promptly retransmit redundant data;
Decoding unit is used for data retransmission is decoded;
Wherein, described receiver also comprises: the redundant data processing unit, described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described data retransmission, according to described Combination Control information, according to the correct data retransmission that decodes obtain with data retransmission in the corresponding correct redundant data of re-transmission redundant data, and this correct redundant data handled; And
The data merge cells is used for treated described correct redundant data and the described first data that pass are merged, and obtains to merge the first data that pass in back;
And wherein, described decoding unit also is used for the first data that pass in described merging back are decoded.
9. receiver according to claim 8 is characterized in that,
When described decoding unit failed described data retransmission is correctly decoded, described data merge cells merged described re-transmission redundant data mutually with the first data that pass, and obtained merging the first data that pass in back;
Described decoding unit is decoded to the first data that pass in described merging back;
Described redundant data processing unit is used for after described decoding unit has carried out being correctly decoded to described merging back first biography data, according to described Combination Control information, pass data according to the head that decodes and obtain and the corresponding correct redundant data of described re-transmission redundant data, and to handling with the corresponding correct redundant data of described re-transmission redundant data; And
The data merge cells is used for corresponding correct redundant data of treated and described re-transmission redundant data and data retransmission are merged, and obtains to merge the back data retransmission;
And wherein, described decoding unit also is used for described merging back data retransmission is decoded.
10. receiver according to claim 8 is characterized in that, the re-transmission redundant data in the described data retransmission is incomplete same with the first redundant data that passes in the data.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810169705A CN101729224A (en) | 2008-10-20 | 2008-10-20 | Transmission data generating device and receiving machine |
| EP09171105.1A EP2178239A3 (en) | 2008-10-20 | 2009-09-23 | Retransmission data generating apparatus and receiver |
| US12/573,328 US20100100787A1 (en) | 2008-10-20 | 2009-10-05 | Transmission data generating apparatus and receiver |
| JP2009240594A JP2010098741A (en) | 2008-10-20 | 2009-10-19 | Transmission data-generating apparatus and receiver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810169705A CN101729224A (en) | 2008-10-20 | 2008-10-20 | Transmission data generating device and receiving machine |
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| CN101729224A true CN101729224A (en) | 2010-06-09 |
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| CN200810169705A Pending CN101729224A (en) | 2008-10-20 | 2008-10-20 | Transmission data generating device and receiving machine |
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| US (1) | US20100100787A1 (en) |
| EP (1) | EP2178239A3 (en) |
| JP (1) | JP2010098741A (en) |
| CN (1) | CN101729224A (en) |
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| CN106031072A (en) * | 2014-02-18 | 2016-10-12 | 华为技术有限公司 | Harq frame data structure and method of transmitting and receiving with harq in systems using blind detection |
| CN106899390A (en) * | 2015-12-21 | 2017-06-27 | 华为技术有限公司 | Method, apparatus and system based on HARQ transmission |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20100100787A1 (en) | 2010-04-22 |
| JP2010098741A (en) | 2010-04-30 |
| EP2178239A2 (en) | 2010-04-21 |
| EP2178239A3 (en) | 2014-03-12 |
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